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All Patents in class 72/345
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	402,668	May 07, 1889	C.L. Hart	Stamping-press
	582,299	May 11, 1897	J. Mohs	Box Making Machine
	2,347,272	Apr. 25, 1944	W.F. Longfield	Sheet metal working press
	3,699,882	Oct. 24, 1972	H.E. Keithley, R.A. Helrigel	Knockout bar assembly for presses
	3,878,706	Apr. 22, 1975	G.C. Berry, H.E. Keithley	Knockout arrangement for presses

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